Brooks Instrument 5850E - Manual (Page 19)

Brooks ® Model 5850E
2-9
Section 2 Installation Installation and Operation Manual
X-TMF-5850E-MFC-eng
Part Number: 541B102AAG
September, 2009
2-13 Five-Volt Reference Output/Valve Drive Configuration
a. Card Edge
Refer to Figures 2-3 and 3-3. Terminal 10 can be jumper selected as 5 Volt
reference output, external valve return or “not used.” The 5 Volt reference
output is required if a potentiometer is to be used to generate the
command signal. To enable the 5 Volt reference output on Terminal 10,
place the yellow jumper at J1 in the D-E position. To disable the 5 Volt
reference output, place the yellow jumper at J1 in the E-F position.
To minimize the effect of resistance in the connection wiring, a separate
“external valve return” can be accessed on Pin 10. To enable this feature,
place the black jumper at J1 in the B-D position and connect Terminal 10 to
power supply common. If the “external valve return” is not enabled, place
the black jumper at J1 in the B-C position.
Note: If the “external valve return” feature is not enabled, the valve voltage
is returned internally on the printed circuit board and the connection wiring
resistance must be less than 0.2 ohms.
b. D-Connector
Refer to Figures 2-4 and 3-4. The 5 Volt reference is always available on
Pin 11.
To minimize the effect of resistance in the connection wiring, a separate
“external valve return” can be accessed on Pin 3. To enable this feature,
place the black jumper at J1 in the B-D position and connect Pin 3 to
power supply common. If the “external valve return” is not enabled, place
the black jumper at J1 in the B-C position.
Note: If the “external valve return” feature is not enabled, the valve voltage
is returned internally on the printed circuit board and the connection wiring
resistance must be less than 0.2 ohms.